import {mapGetters} from 'vuex'

export default {
  computed:{
       ...mapGetters('m_cart',['total'])
     },
  watch:{
    total(){
      this.setBadge()
    }
  },
     onShow() {
       this.setBadge()
     },
     methods:{
       setBadge() {
         uni.setTabBarBadge({
           index:2,
           text:this.total + ''
         })
       }
     }
  }
 